Weight of a person at a height of 2r from the centre of the earth, where r is the radius of the earth
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The weight of the person is w= mg.
At the center of the earth, the gravity is zero because of the acceleration.
Frame the equation for the gravity like g = g (1-h/r). h is referred as the distance.
The distance is equal to the radius. So, w = m x 0 = 0.
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